Display shows 'FILL' or water droplet icon flashes and unit stops producing mist

Safety: Turn off and unplug before removing the tank.

Steps:

• Refill the tank: Remove the tank, open the cap, and fill with clean, preferably demineralized water. Tighten the cap securely.
• Check tank valve: Inspect the spring-loaded valve in the tank cap. Press it gently to ensure it moves freely and is not stuck closed.
• Reinstall the tank: Place the tank back on the base, ensuring it is aligned and fully seated. You should see air bubbles rising as water flows into the base.
• Inspect float and sensor: If 'FILL' remains, remove the tank and check the float in the base for free movement. Clean any scale or debris.
• Test again: After cleaning and refilling, restart the unit. If the error persists with a full tank, the water level sensor or float switch may be defective and require replacement.